[Effects of the proliferation state of the endothelial progenitor cells preconditioned with salvianolic acid B and bone marrow mesenchymal stem cells transplanted in acute myocardial infarction rats].

Objective: To observe the proliferation state of transplanted cells in acute myocardial infarction (AMI) rats, and the endothelial progenitor cells (EPCs) preconditioned by salvianolic acid B in different ratios with the bone mesenchymal stem cells (BMSCs).

Methods: The cultivation and purification of EPCs were performed by density-gradient centrifugation and plastic adherence method. Two types of cells were identified by immunocytochemical method (CD34, CD133, and CD44).